In 1979 " Oenothera deltoides " subsp . " howellii ", the Antioch Dunes Evening Primrose, was declared an endangered species.
22.
The beach evening primrose ( Oenothera drummondii ) is attractive and useful on the dunes, as is Indian blanket ( Gaillardia pulchella ), a familiar Texas wildflower.
23.
I'll certainly be vigilant about that one, thus continuing my long-term, on-again, off-again relationship with the Oenothera genus.
24.
The UK National Council for the Conservation of Plants and Gardens, based at Wisley, maintains an " Oenothera " collection as part of its National Collections scheme.
25.
It derives its name from the resemblance it bears to plants in the genus " Oenothera " . " Ipomoea oenotherae " is a succulent and a cryptophyte.
26.
During the summer months of 1905 09 he studied under Hugo de Vries at the Amsterdam Botanical Garden, where he conducted research on mutations and hybrids of " Oenothera ".
27.
""'Oenothera wolfii " "'is a rare species of flowering plant in the hybridization with its relative and probable descendent, " Oenothera glazioviana ".
28.
""'Oenothera wolfii " "'is a rare species of flowering plant in the hybridization with its relative and probable descendent, " Oenothera glazioviana ".
29.
In " Oenothera lamarchiana " the diploid species has 14 chromosomes, this species has spontaneously given rise to plants with 28 chromosomes that have been given the name " Oenothera gigas ".
30.
In " Oenothera lamarchiana " the diploid species has 14 chromosomes, this species has spontaneously given rise to plants with 28 chromosomes that have been given the name " Oenothera gigas ".
